1,1'-Carbonyldiimidazole → HCID 10220713, compound

Participants

Reaction Steps

A solution of 4-amino-3′-nitro-biphenyl-3-ol (0.115 g, 0.5 mmol) in dry THF (2.5 mL) was treated with a solution of 1,1′-carbonyldiimidazole (0.098 g, 0.6 mmol) in dry THF (2.5 mL). The reaction mixture was stirred at room temperature under a blanket of nitrogen for 6 hours. A precipitate formed, was collected and washed with methylene chloride (50 mL) to give 6-(3-nitro-phenyl)-3H-benzooxazol-2-one (0.095 g, 74%) as a white solid: mp 280-281° C.; 1H-NMR (DMSO-d6) δ11.7 (s, 1H), 8.43 (t, 1H, J=1.15 Hz), 8.2-8.13 (m, 2H), 7.79-7.72 (m, 2H), 7.59 (dd, 1H, J=8.08, 2.31 Hz), 7.21 (d, 1H, J=8.08 Hz), MS (ES) m/z 255([M−H]−, 100%); Anal. Calc. For C13H8N2O4: C, 60.94; H, 3.15; N, 10.93. Found: C, 59.95; H, 3.17; N, 10.77.

Provenance & Evidence